Stop patching oslo.messaging private bits
Stop patching oslo.messaging private bits

This patches at the level of the engine_alive method, then
tests that method separately.

Change-Id: Ie2d57c406665748f287d08eac76c28f90e2b3697

steveb/heat,pshchelo/heat,pshchelo/heat,srznew/heat,jasondunsmore/heat,jasondunsmore/heat,cryptickp/heat,noironetworks/heat,noironetworks/heat,cwolferh/heat-scratch,maestro-hybrid-cloud/heat,openstack/heat,rdo-management/heat,gonzolino/heat,pratikmallya/heat,dims/heat,rh-s/heat,dragorosson/heat,takeshineshiro/heat,miguelgrinberg/heat,rdo-management/heat,srznew/heat,steveb/heat,maestro-hybrid-cloud/heat,miguelgrinberg/heat,openstack/heat,rh-s/heat,gonzolino/heat,cryptickp/heat,takeshineshiro/heat,dims/heat,cwolferh/heat-scratch,pratikmallya/heat,dragorosson/heat